Circuit-controlling device



C. E. WARNER June 29 1926.

CIRCUIT CCNTRCLLINC- DEVICE 2 sheets-sheet I Orgnl Filed Sept. 7l 1920 .hun 29 192e.

C. E. WARNER cmcun' coNTnoLLIuG DEvIcn originan. Filed Sept. v. 1920 2` sheets-shura Patented .lune Z9, 192%.

UNTED STATES ineens' PATIENT OFFICE.

CHESTER E. KFARNER, OF CHICAGO, ILLIN 01%, ASSIGNOR TO BENJAMI ELECTRIC MANUFACTURING COMPANY, OF CHICAGO, ILLINGIS, A CORYORATION OI ILLINOIS.

CIRCUIT-CONTROLLING DEVICE.

Application filed September 7, 1920, Serial No. 408,578. Renewed November 27, 1925. p

luy invention relates to circuit controlling vscclret having a switch mechanism which is capable oi handling currents of larger wattage than heretofore. Such socltets are now called upon to carry current for electric 'lat irons, suction cleaners and other devices talc ing more current than the sockets commonly in vuse are capablefof handling safely, and in view of the. limited space available in the ordinary socket it has been a matter ot great ditiiculty to produce a pull switch mechanism which could be safely employed in a socket at the present time. This is accomplished in the socket and switch mechanism `forming the subject of the present invention.

Further objects will appear from the detailed description to follow and from the appended claims.

In the drawings, in which an embodiment` or' my invention is shown,

Fig. 1 is a plan View of a pull switch socket of the angle type with the cap removed;

Fig. 2 is an axial section on the line 2 2 of Fig. 1;

Fig. o 1s a section on the line 3 3 of Fig. 2; Y

Fig. 4 is a section on the line 4 4 of Fig. 1;

Fig. 5 is a section on the line 5 5 of Fig. 4;

`Fig. 6 is a section on the line 6 6 of Fig' 4 Fig/7 is a detail view of the switch mecha nism, the Yswitch being shown in the on position; Fig. 8 is a sectionon the line 8 8 of Fig'. 1;

Fig-r9 is a detail view similar to Fig. 7, but showing the switch in the off position; Fig. 10 -is a. top plan view of a combined switcharm and switch spindle employed in the switch mechanism, and

shifting member and arotary ratchet memberwithacam carried thereby tornioving Said springlshiitting member,

The construction shown in the drawings comprises in a general way, a pull switch angle socket having an insulating; base 10, shell and center contacts 11 and 12 respectively, supported by the insulating baselO, wiring termina-ls 13 and 14 tor the contacts 11 and 12 respectively, switch mechanism 15 for controlling the circuit between the center contact and its wiring terminal 14 and an ornametal sheet instal casing 16 for housing the insulating base 10 and the various parts supported thereby. v Y

rihe threaded shell contact 11 is always electrically connected with its wiring` terminall, by means of ascrew 17, the head of which engages thel iange 18 ot the threaded shell contact (Fig. 3) and the upper end ot which screw is threaded into the binding plate 19 or the wiring terminal 13 (Fig.

1).` An insulating fibre lining 20 surrounds i the threaded Contact and insulates it from the sheet metal ornamental casing 16. The cap 21 of the sheet metal casing is readily removable to permit access to the wiring terminals and switch mechanism.

The switch mechanism 15 controls the circuit between two spring contact fingers 22 and 23 (Fig. 8) the spring contact linger 22 being alw ys electrically connected with the wiring terminal 14 and the spring contact iinger 23 being always electrically connected with the center contact 12. As shown in Fig. .8 the base portion ot' spring contact linger 22Vis clamped underneath the base portion of the binding plate member 24, by means of the screw. The base portion of the spring contact finger 23 is held underw Vneath the hea-d of the eyelet 2,6, the head at the other end of this eyelet engaging and holding the base portion of the center contact 12, whereby the eyelet 26 not only serves to electrically connect .the center contact 12 Y with the spring contact finger 24 but also serves to mechanically hold these parts in place on the insulating base 10.

Thegswitch mechanism which lcontrols the circuit between the spring contactfiingers 22 and 23 comprises a pivoted switch' arm 27, oscillatablefback and forth .troma-position in which it engages the contacts22 and 23 n to a position in which it is ontvwot` engage- Fig. `11 shows in perspective a springswitch arm 27, a pivoted,springshifting` member 29 on which the other-'end of the Goy spring 28 Sears, suitable shifting mechanism 'for causingthe Amember 29y to oscillatc beck and forth, and a. pnll chain 30 for manual operation of the shifting mechanism.

The shifting mechanism comprises an oscillatable driving ratchet member 31, including' a chain rail to which the pull chain 30 is secured, and ay rotatable driven ratchet member 82 to which is secured a cam or eccentric 33, which operates in a slot 84 in the oscillatable spring-shifting member 29. (Figs. 4, 6, T, S) and ll). rlie oscillatable spring-shifting member is pivotally mounted on a 'T -shaped bearing member 35 tFigs. l and 7') formed as :in integral partin Fig'.k lO. The spindle portion 39 serves as a. bearing forthe oscillatable ratchet member or chainL rail 3l and also for the driven ratchet member 32.

The oscillatable spring-shifting which one end ot' the springl 2S is secured, and is also provided with alriclr-ol projection 43 for engagement with. the switch alim. 2T in case the'yicldinp; force exerted' by the spring 2S does not start the eivitchnrm, to moving quickly enough.l A stop lug 44 may be struck up 'from the switch frame 36,130 limit the. upward oscillation ot the switch arm 27'. For insiilating` the Contact, brush member 45 romthe switch :Win27 the bent end 46V of the switch arm is embedded in an insulating` block 47 to which the brush is secured.

`ForAretuiiD-ine the null chain 50 after it has been-pt ed down, end tor holding the.

ratchet member; 31 meinst :the d' en. ratchet member, 32,. a Coil tersion find compression spring .48. is provided which surrounds theyjournal knciembe ,39 and has one end secured to tllevfranien-priglit 4llend the other end` secured to either one o the two `logs 49 struck .up troni the driving ratchetmerlber 3l;

Tolimt the return movement of the pull Chan under the inluence Oi the. torsion p1'ng48- e St0p-member zinav'fbe struck l elia-m30; Scented2v Y mem A bei` 29 is provide'dwith an eye portion 42 to sprinelattachng DOFtlQlL Sll sltionj to Alee- The cam 33 is shownA as a circular sheet metal disc secured to the driven ratchet member 32 bv means of a rivet 52 (Figs. 4 and l1). The shaft portion 49 of the switch arm extends through a hole adjacent the edge o''fthis cam 33, thus` serving torkeep the cam disc 33 from twisting around on the rivet 52.

he operation of the switch vis, asi'ollows:

Assuming; that the. switch is in the position shown in, Figs. 2, 5 and T, whichis the on positionyand' it is desired to turn the switch to olii position the pull' chain 30 is pulled down and released. The pulling down ci the pull chain moves the oscillatablc drivingratchet member or chain rail 31 through a movementot v18D degrees, and

this movement et the driving-Y ratchet mem- Y ber also moves the drivenratchet member through the .enge-gement. of. the ratchet teeth. 53 et the drvingratehet member with the edges of' the openings 54 inl the. driven ratchet member. This movement of this driven ratchet member through-118,0, degrees moves the cam 33from its extreme lower position shown in Eig. 'Z tothe extreme upper position shown in Fig. 9. This. movement of the cam oscillates the. spring-shifting member 29 romits extreme lower position shown in, 'Tte its extreme upper pesi;- tionY shown in 9. Immediately .alfter the spring 28 is-shifted past the dead center linebetween the spring,Y connection at 38 and the axis of; the spindle 39, the spring exerts a, force tending to movej the switch arm 27 upwardlv to move thev brush 45 ont ot engagement with the contacts 22, and 23. This breaks the circuit let two points between the center contact 1 2 and' its wiring terminal L47., As stated above, f the switch arm 27` should be inclined to stick, the kick-.olf Yprojection 43 will engage `the switch arm to give it a start, after which it will ,move yquickly under the influence kof the spring' 28. The switch arm is brought to a stop against the stop projection 4'4 on they switch frame.

vBv a Similar operation, ythe Switch Willbe thrown to on position by the succeedingdownward oull on the null chain 30.

"Whet- I claim as new and desire ,to Cure bv Letters Relient ci the United- States "1. A pull switch receptacle compri"n 'ng receptacle eenteets and ,switch nieehanism comprising a piece of wire 'bent to fornire shaft portion, efewteh erin .portion `firel espring, ed. ytogeiidi Serina: rattechms ront-ien, a spruigy shittingmemberfand, ratchet 1 anism rotatably vmoontegdon sia por; tienier operetingnertlsnrlng:.e-gftmgmemf A, s vgtehr .mechnnisincomprising a;

piece of W're bentteiQrm.eiswitchenn nerf.

rio

tion and a spring etaching portion, im insulating member in which said portions are embedded, e contact member Meidling said insuieting member, and a. shi-fiable spring Secured io seid spring attaching porion.

A switch mechanism comprising il switch reme, e spindle jomiiaied in eziid iframe, e switch arm on one end of said. Spindle beyond Said frame, e rotating member including a cam supporced on seid spindle, am oscillating ratchet member for turning seid rotating' member continuously in one direction, ay spring shift-ing member and i spring acting between seid spring shifting mei'iiber and said switch erm, said spring shifting member being' moved by said cam.

*4. A switch mechanism comprising a Switch frame, spindle supported ro osciliete in said frame, a rotary member turning er1 seid spindle, e recebet member oscilbhg on Seid spindle and driving Seid rotery member, a switch Contact member osaille-,ting With Said spindle., and means i11- teweeciiee sei-i rot-ary member and said h come@ member for rocking said spmciie and Said. Witch Contact member with a. snep actieri in both directions.

in Witness whereof, l have hereunto subscribed my name.

CHESTER E. WARNER. 

